Band 6.0 IELTS Writing Task 1 Model Answer

Overall Band Score: 6.0 · Cambridge IELTS 19 · 2026-10-08

IELTS Writing Task 1 question

 

The diagram below shows how a biofuel called ethanol is produced.

Summarise the information by selecting and reporting the main features, and make comparisons where relevant.

Student answer (Band 6.0)

The process chart depicsts the making procedure of biofuel production which is also known as making of ethanol.

Overall, it can be clearly seen that there are total eight processes to make biofuel from the sunlight and carbon dioxide that plants used and start the cyle.

Firstly, plants and trees grow using the energy which is obtained by using sunllight and carbon dioxide. These grown plants and tress are harvested then they are gone under the pre-processing stage. Ater pre-processing they become cellulos, after going through some additional processing they are converted into the sugar. Some microbs are added into the sugar and finally we get biofuel which can be used in various vehicles such as: cars, trucks, and airplanes. Vehicles consume this ethanol and in return they give us carbon dioxide in the form of smoke which is essential for the growth of plants and trees. In this way the cycle always go on.

AI examiner evaluation

Task Achievement / Task Response: Band 6.5

You cover the main stages and capture the diagram’s circular nature: plant growth uses sunlight and carbon dioxide, the material is processed into sugars, microbes are added, and transport use releases carbon dioxide back to plants. The overview identifies the cycle, and the sequence is generally accurate. However, the statement that there are “total eight processes” is unclear and does not match the diagram’s distinct stages; the account also skips the explicit production of ethanol after microbes are added. The overview could more clearly distinguish the conversion stages from the later use of ethanol in three transport modes. These omissions and imprecisions limit how fully the key features are reported, although the response addresses the task overall.

Coherence and Cohesion: Band 6.5

The response has a clear overall progression, moving from plant growth through processing and fuel use, and the opening overview helps orient the reader. Sequencing words such as “Firstly,” “then,” “after,” and “finally” make the process easy to follow. The final sentence also returns to the cycle, giving the account a sense of closure. However, most information is placed in one long paragraph, and the repeated use of “then” and “after” makes the linking somewhat mechanical. Some references are not fully clear, as in “they are gone under the pre-processing stage,” where the subject and process relationship are awkward. Separate the overview from the detailed stages and use more precise links between each transformation.

Lexical Resource: Band 5.5

You use relevant process vocabulary, including “harvested,” “pre-processing,” “cellulose,” “microbes,” and “carbon dioxide,” so the reader can identify the main stages. There is also some attempt to vary wording with “converted into” and “in return.” However, spelling errors such as “depict[s],” “sunllight,” “tress,” “cellulos,” and “microbs” are noticeable and reduce accuracy. Several expressions are imprecise or unnatural, including “making procedure,” “we get biofuel,” and “give us carbon dioxide.” In particular, the diagram labels the product as ethanol, so calling it simply “biofuel” loses precision. Aim for accurate process collocations and proofread technical terms carefully.

Grammatical Range and Accuracy: Band 5.5

You attempt a mixture of simple and more complex sentences, including a relative clause in “which is essential for the growth of plants and trees” and a sequence of subordinate clauses describing the stages. The overall meaning remains understandable. However, grammatical control is uneven: “there are total eight processes” needs an article and a more natural construction, while “the cycle always go on” has a subject–verb agreement error. The sentence beginning “These grown plants and tress are harvested then they are gone under…” also joins clauses awkwardly and uses an incorrect passive pattern. Some sentence structures are long and difficult to control. Use shorter, accurately linked clauses and check articles, agreement, and passive forms.

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